56603 has 6 divisors (see below), whose sum is σ = 59724. Its totient is φ = 53636.

The previous prime is 56599. The next prime is 56611. The reversal of 56603 is 30665.

56603 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 56603 - 2² = 56599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 476 + ... + 582.

It is an arithmetic number, because the mean of its divisors is an integer number (9954).

2⁵⁶⁶⁰³ is an apocalyptic number.

56603 is a deficient number, since it is larger than the sum of its proper divisors (3121).

56603 is a wasteful number, since it uses less digits than its factorization.

56603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 56603 is about 237.9138499541. The cubic root of 56603 is about 38.3954548295.

The spelling of 56603 in words is "fifty-six thousand, six hundred three".